As you might expect, test technologies of today don't bear much resemblance to those of a decade or two ago. This week's interviewee is Jay Alexander, the CTO of Keysight, formerly Agilent Technologies. And he's made a career out of test. So who better to ask about how test has changed. It came as no surprise that one "mega-change" in test over the years is in the introduction of RF into the mix. We also discussed the challenges involved with IoT technologies.